button {
  border: 0;
  height: 45px;
  width: 300px;
  border-radius: 22px;
  font-size: 20px;
  color: #fff;
  background-color: #FF471D;
}
.code_btn {
  font-size: 16px;
  color: #000;
  height: 45px;
  width: 100px;
  border-radius: 0;
  background-color: orange;
  cursor: pointer;
}
.code_input {
  width: 200px;
}
.app {
  position: relative;
  section {
    position: relative;
    height: 600px;
    width: 100%;
    background: url('../login/image/login.jpg') no-repeat;
    background-size: 100% 100%;
    .login {
      position: absolute;
      top: 50px;
      right: 150px;
      height: 500px;
      width: 400px;
      border-radius: 10px;
      background-color: #fff;
      .login_nav {
        height: 60px;
        width: 100%;
        padding: 10px 50px;
        border-bottom: 3px solid #999;
        h2 {
          cursor: pointer;
          font-weight: 400;
          height: 50px;
        }
        .cls_h2 {
          border-bottom: 3px solid orange;
        }
        h2:nth-child(1) {
          float: left;
        }
        h2:nth-child(2) {
          float: right;
        }
      }
      .acc_input {
        margin-top: 50px;
      }
    }
  }
  footer {
    margin-top: 50px;
    margin-left: 420px;
    width: 1000px;
    height: 80px;
    span {
      font-size: 12px;
      color: #666;
    }
  }
}